SAN FRANCISCO, Jan 27- Yahoo Inc plans to spin off its 15 percent stake in China's Alibaba Group Holding Ltd, responding to pressure to hand over to shareholders its prized e-commerce investment valued at roughly $40 billion. Shareholders feel that Yahoo and its stake in Alibaba would be worth more separately, so long as the Alibaba shares are not subject to the...

SAN FRANCISCO, Jan 27- Yahoo Inc unveiled a plan for a tax-free spin-off of its 15 percent stake in China's Alibaba Group Holding Ltd, responding to pressure to distribute to shareholders its prized investment valued at roughly $40 billion. Shares of Yahoo were up roughly 7 percent at $51.45 in after-hours trading on Tuesday. The new entity will include Yahoo's...